JPS62218064A - Forming dresser - Google Patents

Abstract

PURPOSE:To make it possible to dress the shape of a tool tip accurately by making the tool tip formed with thin plate-shaped electroformed grindstone incorporating super-fine grinding sand held in dispersed condition in electrodeposited metallic layer glued to a metallic base surface. CONSTITUTION:After forming a plated layer incorporating super-fine abrasive grain in dispersed condition by means of dispersed particle metal plating method on a metallic surface having an exfoliating layer, the layer is exfoliated to obtain a thin plate-shaped electroformed grindstone. This tin plate-shaped electroformed grindstone is cut out is sizes of respective sloped surfaces of a metallic base 11 and the cut pieces are glued to the sloped surfaces of the metallic base as electroformed grindstones 12. With this constitution, the shape of the grindstone including its edge part can be made very accurate. Since the cut pieces can be glued in multiple number, grindstone layer of greater thicknesses can be easily formed.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a shape dresser that corrects the shape of a shape grindstone that performs precision shape grinding, and in particular, it relates to a shape dresser that corrects the shape of a shape grinding wheel that performs precision shape grinding, and in particular, it relates to a shape dresser that corrects the shape of a shape grindstone that performs precision shape grinding, and in particular, it is used to accurately form the shape of the cutting edge. Regarding what is possible.

[Prior Art] Conventionally, as shown in FIG. 4, a full-form dresser has a metal plating layer in which superimposed particles are applied to the surface of a sudir base metal 1 that has been cut into a full-form shape by a so-called particle dispersion metal plating method. A so-called electrodeposited full-form dresser is known in which a superabrasive grindstone layer 2 in which abrasive grains are dispersed and held is formed.

[Problems to be Solved by the Invention] However, in such a conventional electrodeposition dresser, as shown in FIG. However, it is extremely difficult to obtain a dresser with a curved edge angle because of the bulges in the edges.However, conversely, there is less distribution of current in the grooves that make up the troughs 4, so it is difficult to obtain a dresser with a curved edge angle. Since the retention of abrasive grains was not sufficient, it was necessary to obtain a grindstone layer having a desired shape and sufficient dimensional accuracy.

In addition, in order to ensure the required dimensional accuracy, the thickness of the plating layer cannot be increased beyond a certain level, and therefore it has not been possible to obtain the desired life span.

Furthermore, since it is not possible to form different types of grindstone layers on the same alloy, if finishing is to be performed after rough machining, multiple electrodeposition dressers must be used to perform multiple machining steps. .

As described above, conventional electrodeposition dressers have not been fully satisfactory in terms of accuracy, lifespan, and other aspects of production control.

An object of the present invention is to provide a full-length dresser that eliminates the above-mentioned drawbacks.

[Means for Solving the Problems] The present invention provides a method in which the surface of the base metal is formed into a shape corresponding to the shape of the full-form grindstone, and superabrasive grains are dispersed and retained in the metal layer deposited on the surface of the base metal. It has a structure in which a thin plate-shaped electroformed grindstone is fixed to form a cutting edge part, and with this structure, the thin plate-shaped electroformed grindstone can be cut out into a plurality of arbitrary shapes according to the overall shape of Ni7 and fixed. Because of this, the shape including the edge portion can be formed extremely accurately, and since a plurality of thin plate electroformed grindstones can be stacked and fixed at the same location, a thick layer of grindstones can be easily formed.

In addition, since 5" and 4 types of grindstones can be fixed at different locations, it is possible to form the initial grinding wheel part and the finishing grindstone part in the same alloy.

[Example] FIG. 1 is a sectional view of a full-length dresser according to an embodiment of the present invention, in which the surface portion of the base metal II fixed to the base IO is formed into a full-sized shape, and the surface portion A thin plate-shaped electroformed grindstone I2 in which superabrasive grains such as diamond are dispersed and held in an electrodeposited metal layer is fixed to the grinding wheel I2.

That is, the surface portion of the base metal 11 is formed in a shape corresponding to the shape of a plurality of protruding triangular cutting edges of the full-form grindstone 13 to be dressed. As shown in the enlarged view of the figure, a thin plate electroformed grindstone 12 cut out to the size of each inclined surface 11-1 is fixed to each inclined surface 11-1 of this surface portion. .

This thin-plate electroformed grindstone can be obtained relatively easily by a so-called electroforming method.

That is, a plating layer in which superabrasive grains are dispersed is formed on a metal surface having peelability by a so-called particle dispersion metal plating method,
Thereafter, the plated layer can be peeled off and cut into a predetermined shape by electrical discharge machining or the like.

To perform dressing with the above-mentioned general dresser,
As shown in FIG. 1, the cutting is carried out by rotating the forming grindstone 13 and bringing the forming dresser into contact with the cutting edge of the forming grindstone.

The above embodiment has the following advantages.

That is, since the thin plate-shaped electroformed grindstone can be cut out into a plurality of arbitrary shapes corresponding to the overall shape and fixed, the shape and dimensions of the complex-shaped cutting edge portion can be formed extremely accurately.

In addition, unlike conventional electrodeposition dressers, there is no need to directly plate the alloy; instead, a grinding wheel is formed into a thin plate using electroforming, and then accurately cut to a predetermined size. Since it is fixed to the surface of the base metal formed into a shape, the shape and dimensions of the cutting edge can be formed extremely accurately, and there is no possibility of bulging of the edge.

Furthermore, if the grinding wheel layer becomes worn, it can be regenerated relatively easily by fixing a new thin plate-shaped electroformed grinding wheel, and the alloy can be used repeatedly.

FIG. 3 is a perspective view showing a second embodiment of the present invention, in which a thin electroformed grindstone 22-■ having relatively coarse superabrasive grains is fixed to one part of the surface of the base metal 21, A thin plate electroformed grindstone 22-2 having relatively fine superabrasive grains is fixed to the other part.

In this embodiment, rough machining is first performed so that only the grindstone 22-1 having coarse abrasive grains contacts the cutting edge of the grindstone to be dressed, and then the grindstone 22-2 having fine abrasive grains is in contact with the cutting edge of the dressing target grindstone. Since the finishing process can be performed in such a way that the dressing is in contact with the cutting edge of the dressing target grindstone,
Rough machining and finishing machining can be performed in one step using one dresser.

In addition, in each of the above embodiments, an example was given in which an I-layer thin plate-shaped electroformed grindstone is fixed to the surface of the base metal, but the present invention is not limited to this, and the thin plate-shaped electroformed grindstone is fixed to the same place. This includes the case where a plurality of grindstones are stacked and fixed together. According to this, it is possible to easily form a thick layer of grindstones, so that both sharpness and service life can be made more sufficient.

[Effects of the Invention] As described in detail above, the present invention forms the base metal surface portion in a shape corresponding to the shape of the full-form grindstone, and also includes superabrasive grains in the electrodeposited metal layer on the base metal surface. A configuration is developed in which the thin plate-shaped electroformed grindstone formed by dispersion and holding is fixed and used as a cutting edge part, and with this configuration, the thin plate-shaped electroformed grindstone is cut into an arbitrary shape with the number of marks according to the overall shape. Because it can be firmly fixed, the shape, including the edges, can be made extremely accurately. If this can be formed, several thin plate-shaped electroformed grindstones can be stacked and fixed at the same location in one summer, making it possible to easily form a thick layer of grindstones.

In addition, since different types of grindstones can be fixed to different locations, it is possible to form the rough machining whetstone part and the finish machining whetstone part in the same alloy. processing and processing.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a complete dresser according to an embodiment of the present invention, FIG. 2 is a partially enlarged view of FIG. 1, and FIG.
A perspective view showing an embodiment, and FIG. 11 a sectional view showing a conventional example. 1.11.21...base metal, 2...grindstone layer, 12.2
2-1.22-2...Thin plate electroformed grindstone, 13...Complete grindstone.

Claims (1)

[Claims] In a full-form dresser in which a cutting edge portion having a shape corresponding to the shape of a full-form whetstone is formed on a base metal surface portion, the base metal surface portion is formed into a shape corresponding to the shape of a full-form whetstone, and
A full-sized dresser characterized in that a thin plate-shaped electroformed grindstone formed by dispersing and retaining superabrasive grains in an electrodeposited metal layer is fixed to the surface of the base metal to form a cutting edge portion.